2025-10-162025-11-252025-10-162025-11-25https://openaccess.ircica.org/handle/123456789/253581 black and white negativeBekdemir Bridge (Osmaneli)-BilecikRailways-BilecikBilecik-TurkeyHamidiye-Hejaz RailwayHaydarpaşa-Ankara demiryolu hattında Bilecik'te Bekdemir Köyü KöprüsüPhotograph